| Boulogne-sur-Mer to Caltanissetta | 1,100.22 mi (1,770.64 km) |
| Boulogne-sur-Mer to Calvisano | 547.74 mi (881.50 km) |
| Boulogne-sur-Mer to Calvizzano | 907.09 mi (1,459.82 km) |
| Boulogne-sur-Mer to Camaiore | 620.22 mi (998.15 km) |
| Boulogne-sur-Mer to Cameri | 485.09 mi (780.67 km) |
| Boulogne-sur-Mer to Camisano Vicentino | 587.92 mi (946.16 km) |
| Boulogne-sur-Mer to Campagna | 949.26 mi (1,527.69 km) |
| Boulogne-sur-Mer to Campagnano di Roma | 782.92 mi (1,259.98 km) |
| Boulogne-sur-Mer to Campi Bisenzio | 652.47 mi (1,050.05 km) |
| Boulogne-sur-Mer to Campi Salentina | 1,062.71 mi (1,710.27 km) |
| Boulogne-sur-Mer to Campiglia Marittima | 677.74 mi (1,090.72 km) |
| Boulogne-sur-Mer to Campobasso | 886.83 mi (1,427.22 km) |
| Boulogne-sur-Mer to Campobello di Licata | 1,110.74 mi (1,787.56 km) |
| Boulogne-sur-Mer to Campobello di Mazara | 1,057.01 mi (1,701.09 km) |
| Boulogne-sur-Mer to Campodarsego | 595.97 mi (959.11 km) |
